Platen printing-machine.



No. 865,800. PATENTED SEPT. 10, 1907,

M. ROOKSTROH. PLATBN PRINTING MACHINE APPLICATION FILED JUNE 4, 1907.

2 SHEETS-SHEET 1.

No. 865,800. PATENTED SEPT. 10, 1907.

M. ROUKSTROH. PLATEN PRINTING MACHINE.

APPLICATION FILED JUNE 4, 1907.

2 SHEETS-SHEET 2.

MAX ROQKSTROH, OF KLEIN-SED LITZ, NEAR PIRNA, GERMANY.

PLATED) PRINTING-MACHINE.

No. sessoo.

Specification of- Letters Patent.

Patented Sept. 10, 1907.

Application filed Tune 4, 1907. Serial No. 377,2801

To all whom it may concern:

Be it known that 1, MAX Roons'rnon, director, a resident of Klcin-Sodlitz, near Pirns, Villa Lutzow, in the Kingdom of Saxony, Germany, have invented new and useful Improvements in and Applicable to Platen Printing-Mschincs, of Whichthe following" is s spccification. I i This invention relates to improvements in and applicable to platen printingmachines, and has for its object the construction of a combined hand guard andst-op motion so arranged that if the upper part of the hand guard is removed from the machine, or if the movement of the hand guard ism-rested the machine is stopped before the platen comes into Contact with the type bed.

In the accompanying drawings which form part of this specification and ore referred to in the following d e 7 toiled description of the invention, Figures 1, 2 and 3 are side elevations of part of a platen printing machine,

showing the improved mechanism in three positions,

and Fig. 4 is a front elevation of the some.

The hand guard lin the iinprovedmechsnism, is in the form of a bar which extends, across the top ofthe platen and is carried by's'nns 2 and 3 which are fitted to turn on axles carried by the standard. Mounted upon the same axle as the arm 2 is the stop motion lever 5 which has a projecting pin 6 near its iippcr end and a catch '7 at its lower end, the said catch engaging with a spring pin 8 which "is connected to the driving clutch, belt fork or other similar appliance by or through which the nmchine is set in motion ond'stopped. Pi'voted on the side of the platen is s crank lover 4: the upper end 1 of which is designed to come into contact with the hand guard 1, and when in such contact the lower end of the lover is raised to pass over the pin 6 in the lever 5. As

strikes upon the hand guard l as shown in Fig 1, and the lower end of the lever 4 passes over the pin 6 as shown in Fig. 2. Should the hand guru-d be absent, or he held from the lever 4 then the lower end of this levor strikes the pin 6 as shown in Fig. 3 and the forward movement of the platen operates 3e lever 5 and the spring pin 8 hoing thereby released from the catch 7 brings into action. the machine stop mechsnism, and the machine is brought to rest before the platen comes into contact with the type bed.

Having now psrticulerly described and ascertained the nature of mysaid invention and in What manner the some is to he performed I declare that what 1 claim by the platen, a stop motion lever having a pin arranged in the path of one of the arms of said bell crank. and a hand 'o'nrrl rirrnnged 'in operative-relation with respect to the platen and when in operative position adapted to retain the bell-crank clear oi the pin, said hand guard when moved from operative position allowing of the hell crank to en; gessid pin and shlft sald stop motion lever to release the stop motion mechanism.

In testimony whereot l have hereunto set my hand in presence 01' two suhscrlhinp; witnesses.

MAX ROCKS'IROII.

Witnesses: v iAt'L mums, (Jul-inn S mon.

the platen moves to its printing position the lever 4 In a platen printing press, a hell-crank lever curried 

